Gaseous fuel



UNITED STATES rATsNT orrics.

J'AMES B. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, OFLAKEWOOD, OHIO, ASSIGNORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH,PENNSYLVANIA,

A OORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

T 0 all whom it may concern Be it known that we, 1) JAMES R. Rosa, (2)JOHN HARRIS, citizens of the United States, residing at 1) Edgeworth,(2) Lakewood, in the county of (1) Allegheny, (2) Cuyahoga, and State of(1) Pennsylvania, (2) Ohio, have invented a certain new and usefulImprovement in Gaseous Fuel, of which the following is a full, clear,and exact description.

This invention relates to gaseous fuel, and more particularly to a fuelwhich is especially adapted for the purpose of cutting metals with greatrapidity, where extreme cleanness of cutting is not essential. A use forwhich our gas is particularly well suited is for the cutting of scrapiron.

We obtain a gas having the above desirable characteristics by mixingwith hydrogen as a combustible base, by-product cokeoven gas andethylene in the proportions of from 2-}% to 12%% by volume each of suchby-product coke-oven gas and such ethylene to the hydrogen constituent.The byproduct coke-oven gas has nearly the same flame temperature as thehydrogen, and the mixture of the ethylene therewith makes thetemperature of the combined gases in excess of that obtained by thecombustion of hydrogen alone and equal to at least 3200 C. Furthermore,the by product coke-oven gas is also readily obtainable as a source ofgas for cutting'purposes, in steel mills. The gaseous mixture produceswithin the burning hydrogen a visible cone which enables the operator toadjust the proportions of the gases and of the combustion-supportingoxygen as may be necessary, as well as to apply the flame in the mostadvantageous manner to the work. 4

Both the volume of the flame and the heat units produced by thecombustion of the mixture are greater than are produced by thecombustion of hydrogen alone, but are lower than usually required foroperating on heavy masses of metal and for cutting cast iron and steeland corroded, dirty and slaggy iron and steel. However, our gaseousmixture is capable of cutting with muchgreater rapidity than can beaccomplished by gases having such higher carbon content.

Taking Koppers by-product coke-oven Specification of Letters Patent.

Application filed December 26, 1919.

Patented Jan. 24, 1922.

Serial No. 347,448.

gas as a type, the average analysis of the According to Richards onMetallurgical Calculations, published in 1908, and with the by-productscoke-oven gas of approximately the analysis above set forth", the flametemperature produced by the combustion of the above described gaseousmixture will be at least 3200 C., and the variations in the percentagesof the said gases will cause approxiinately the following variations inthe net B. T. U. per cu. ft. of mixture and in the cubic feet of oxygenrequired for the combustion of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 2%% eachof by-product coke-oven gas andethylene; net B. T. U.s 334 cu. ft. of oxygen .575.

No. 2 mixture, 75% H. with 12%% each of by-product coke-oven gas andethylene;

not B. T. U.s 493; cu. ft. of oxygen .875.

Having thus described our invention, what we claim is v 1. A gas forcutting, welding and heating purposes consisting of a mixture ofby-product coke gas and ethylene with hydrogen in the proportions offrom 2%% to 12% by volume of each of by-product coke gas and more than25% of such combined gases tothe hydrogen, the by-product coke-oven gasand ethylene being present in the proportions to at least 2'% each insuch mixture.

In testimony whereof, we hereunto'aflix our signatures.

JAMES R. ROSE. JOHN HARRIS.

